Read the following email from a manager to an employee:
Dear Mr. Johnson,
I am writing to inform you that our company will be implementing a new system for tracking employee hours starting next month. This system will allow employees to clock in and out electronically, and it will also provide us with more accurate records of employee work hours.
Please let me know if you have any questions or concerns about this new system.
Best regards,
Mr. Smith
What is the main purpose of the email?